{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {},
   "outputs": [],
   "source": [
    "import numpy as np\n",
    "\n",
    "\n",
    "def sample_data(shape=(73, 145)):\n",
    "    nlats, nlons = shape\n",
    "    lats = np.linspace(-np.pi / 2, np.pi / 2, nlats)\n",
    "    lons = np.linspace(0, 2 * np.pi, nlons)\n",
    "    lons, lats = np.meshgrid(lons, lats)\n",
    "    wave = 0.75 * (np.sin(2 * lats) ** 8) * np.cos(4 * lons)\n",
    "    mean = 0.5 * np.cos(2 * lats) * ((np.sin(2 * lats)) ** 2 + 2)\n",
    "\n",
    "    lats = np.rad2deg(lats)\n",
    "    lons = np.rad2deg(lons)\n",
    "    data = wave + mean\n",
    "\n",
    "    return lons, lats, data\n",
    "\n",
    "\n",
    "lon, lat, data = sample_data(shape=(73, 145))\n",
    "lon -= 180"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {},
   "outputs": [],
   "source": [
    "%matplotlib inline\n",
    "\n",
    "import matplotlib\n",
    "\n",
    "cm = matplotlib.cm.get_cmap(\"cubehelix\")\n",
    "\n",
    "normed_data = (data - data.min()) / (data.max() - data.min())\n",
    "colored_data = cm(normed_data)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# Bad"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/html": [
       "<div style=\"width:100%;\"><div style=\"position:relative;width:100%;height:0;padding-bottom:60%;\"><span style=\"color:#565656\">Make this Notebook Trusted to load map: File -> Trust Notebook</span><iframe src=\"about:blank\" style=\"position:absolute;width:100%;height:100%;left:0;top:0;border:none !important;\" data-html=<!DOCTYPE html>
<head>    
    <meta http-equiv="content-type" content="text/html; charset=UTF-8" />
    
        <script>
            L_NO_TOUCH = false;
            L_DISABLE_3D = false;
        </script>
    
    <style>html, body {width: 100%;height: 100%;margin: 0;padding: 0;}</style>
    <style>#map {position:absolute;top:0;bottom:0;right:0;left:0;}</style>
    <script src="https://cdn.jsdelivr.net/npm/leaflet@1.6.0/dist/leaflet.js"></script>
    <script src="https://code.jquery.com/jquery-1.12.4.min.js"></script>
    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.2.0/js/bootstrap.min.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/Leaflet.awesome-markers/2.0.2/leaflet.awesome-markers.js"></script>
    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/leaflet@1.6.0/dist/leaflet.css"/>
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css"/>
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap-theme.min.css"/>
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.6.3/css/font-awesome.min.css"/>
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/Leaflet.awesome-markers/2.0.2/leaflet.awesome-markers.css"/>
    <link rel="stylesheet" href="https://cdn.jsdelivr.net/gh/python-visualization/folium/folium/templates/leaflet.awesome.rotate.min.css"/>
    
            <meta name="viewport" content="width=device-width,
                initial-scale=1.0, maximum-scale=1.0, user-scalable=no" />
            <style>
                #map_08f7298ab0594759863ae10e3ed57464 {
                    position: relative;
                    width: 100.0%;
                    height: 100.0%;
                    left: 0.0%;
                    top: 0.0%;
                }
            </style>
        
    
                <style>
                    .leaflet-image-layer {
                        /* old android/safari*/
                        image-rendering: -webkit-optimize-contrast;
                        image-rendering: crisp-edges; /* safari */
                        image-rendering: pixelated; /* chrome */
                        image-rendering: -moz-crisp-edges; /* firefox */
                        image-rendering: -o-crisp-edges; /* opera */
                        -ms-interpolation-mode: nearest-neighbor; /* ie */
                    }
                </style>
            
</head>
<body>    
    
            <div class="folium-map" id="map_08f7298ab0594759863ae10e3ed57464" ></div>
        
</body>
<script>    
    
            var map_08f7298ab0594759863ae10e3ed57464 = L.map(
                "map_08f7298ab0594759863ae10e3ed57464",
                {
                    center: [0.0, -8.592297607680002e-17],
                    crs: L.CRS.EPSG3857,
                    zoom: 1,
                    zoomControl: true,
                    preferCanvas: false,
                }
            );

            

        
    
            var tile_layer_5de8294b29f14d9880d29714c9349a7a = L.tileLayer(
                "https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png",
                {"attribution": "Data by \u0026copy; \u003ca href=\"http://openstreetmap.org\"\u003eOpenStreetMap\u003c/a\u003e, under \u003ca href=\"http://www.openstreetmap.org/copyright\"\u003eODbL\u003c/a\u003e.", "detectRetina": false, "maxNativeZoom": 18, "maxZoom": 18, "minZoom": 0, "noWrap": false, "opacity": 1, "subdomains": "abc", "tms": false}
            ).addTo(map_08f7298ab0594759863ae10e3ed57464);
        
    
            var image_overlay_e3600d39580a4b589107fe32691b5b18 = L.imageOverlay(
                "data:image/png;base64,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",
                [[-90.0, -180.0], [90.0, 180.0]],
                {"opacity": 0.25}
            ).addTo(map_08f7298ab0594759863ae10e3ed57464);
        
</script> onload=\"this.contentDocument.open();this.contentDocument.write(atob(this.getAttribute('data-html')));this.contentDocument.close();\" allowfullscreen webkitallowfullscreen mozallowfullscreen></iframe></div></div>"
      ],
      "text/plain": [
       "<folium.folium.Map at 0x7f0aac36f430>"
      ]
     },
     "execution_count": 3,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "import folium\n",
    "\n",
    "\n",
    "m = folium.Map(location=[lat.mean(), lon.mean()], zoom_start=1)\n",
    "\n",
    "folium.raster_layers.ImageOverlay(\n",
    "    image=colored_data,\n",
    "    bounds=[[lat.min(), lon.min()], [lat.max(), lon.max()]],\n",
    "    opacity=0.25,\n",
    ").add_to(m)\n",
    "\n",
    "m"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# Good"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/html": [
       "<div style=\"width:100%;\"><div style=\"position:relative;width:100%;height:0;padding-bottom:60%;\"><span style=\"color:#565656\">Make this Notebook Trusted to load map: File -> Trust Notebook</span><iframe src=\"about:blank\" style=\"position:absolute;width:100%;height:100%;left:0;top:0;border:none !important;\" data-html=<!DOCTYPE html>
<head>    
    <meta http-equiv="content-type" content="text/html; charset=UTF-8" />
    
        <script>
            L_NO_TOUCH = false;
            L_DISABLE_3D = false;
        </script>
    
    <style>html, body {width: 100%;height: 100%;margin: 0;padding: 0;}</style>
    <style>#map {position:absolute;top:0;bottom:0;right:0;left:0;}</style>
    <script src="https://cdn.jsdelivr.net/npm/leaflet@1.6.0/dist/leaflet.js"></script>
    <script src="https://code.jquery.com/jquery-1.12.4.min.js"></script>
    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.2.0/js/bootstrap.min.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/Leaflet.awesome-markers/2.0.2/leaflet.awesome-markers.js"></script>
    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/leaflet@1.6.0/dist/leaflet.css"/>
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css"/>
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap-theme.min.css"/>
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.6.3/css/font-awesome.min.css"/>
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/Leaflet.awesome-markers/2.0.2/leaflet.awesome-markers.css"/>
    <link rel="stylesheet" href="https://cdn.jsdelivr.net/gh/python-visualization/folium/folium/templates/leaflet.awesome.rotate.min.css"/>
    
            <meta name="viewport" content="width=device-width,
                initial-scale=1.0, maximum-scale=1.0, user-scalable=no" />
            <style>
                #map_1d2dd7e189eb47a89ee4ee503caab6a5 {
                    position: relative;
                    width: 100.0%;
                    height: 100.0%;
                    left: 0.0%;
                    top: 0.0%;
                }
            </style>
        
    
                <style>
                    .leaflet-image-layer {
                        /* old android/safari*/
                        image-rendering: -webkit-optimize-contrast;
                        image-rendering: crisp-edges; /* safari */
                        image-rendering: pixelated; /* chrome */
                        image-rendering: -moz-crisp-edges; /* firefox */
                        image-rendering: -o-crisp-edges; /* opera */
                        -ms-interpolation-mode: nearest-neighbor; /* ie */
                    }
                </style>
            
</head>
<body>    
    
            <div class="folium-map" id="map_1d2dd7e189eb47a89ee4ee503caab6a5" ></div>
        
</body>
<script>    
    
            var map_1d2dd7e189eb47a89ee4ee503caab6a5 = L.map(
                "map_1d2dd7e189eb47a89ee4ee503caab6a5",
                {
                    center: [0.0, -8.592297607680002e-17],
                    crs: L.CRS.EPSG3857,
                    zoom: 1,
                    zoomControl: true,
                    preferCanvas: false,
                }
            );

            

        
    
            var tile_layer_79b5cedb96ac4e1cbb1bedb6d4d45e7c = L.tileLayer(
                "https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png",
                {"attribution": "Data by \u0026copy; \u003ca href=\"http://openstreetmap.org\"\u003eOpenStreetMap\u003c/a\u003e, under \u003ca href=\"http://www.openstreetmap.org/copyright\"\u003eODbL\u003c/a\u003e.", "detectRetina": false, "maxNativeZoom": 18, "maxZoom": 18, "minZoom": 0, "noWrap": false, "opacity": 1, "subdomains": "abc", "tms": false}
            ).addTo(map_1d2dd7e189eb47a89ee4ee503caab6a5);
        
    
            var image_overlay_c654ecdd479b4908a7576a34ea08ca08 = L.imageOverlay(
                "data:image/png;base64,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",
                [[-90.0, -180.0], [90.0, 180.0]],
                {"opacity": 0.25}
            ).addTo(map_1d2dd7e189eb47a89ee4ee503caab6a5);
        
</script> onload=\"this.contentDocument.open();this.contentDocument.write(atob(this.getAttribute('data-html')));this.contentDocument.close();\" allowfullscreen webkitallowfullscreen mozallowfullscreen></iframe></div></div>"
      ],
      "text/plain": [
       "<folium.folium.Map at 0x7f0aac3bfe20>"
      ]
     },
     "execution_count": 4,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "m = folium.Map(location=[lat.mean(), lon.mean()], zoom_start=1)\n",
    "\n",
    "folium.raster_layers.ImageOverlay(\n",
    "    image=colored_data,\n",
    "    bounds=[[lat.min(), lon.min()], [lat.max(), lon.max()]],\n",
    "    mercator_project=True,\n",
    "    opacity=0.25,\n",
    ").add_to(m)\n",
    "\n",
    "\n",
    "m"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# Same as above but with cartopy"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/html": [
       "<div style=\"width:100%;\"><div style=\"position:relative;width:100%;height:0;padding-bottom:60%;\"><span style=\"color:#565656\">Make this Notebook Trusted to load map: File -> Trust Notebook</span><iframe src=\"about:blank\" style=\"position:absolute;width:100%;height:100%;left:0;top:0;border:none !important;\" data-html=PCFET0NUWVBFIGh0bWw+CjxoZWFkPiAgICAKICAgIDxtZXRhIGh0dHAtZXF1aXY9ImNvbnRlbnQtdHlwZSIgY29udGVudD0idGV4dC9odG1sOyBjaGFyc2V0PVVURi04IiAvPgogICAgCiAgICAgICAgPHNjcmlwdD4KICAgICAgICAgICAgTF9OT19UT1VDSCA9IGZhbHNlOwogICAgICAgICAgICBMX0RJU0FCTEVfM0QgPSBmYWxzZTsKICAgICAgICA8L3NjcmlwdD4KICAgIAogICAgPHN0eWxlPmh0bWwsIGJvZHkge3dpZHRoOiAxMDAlO2hlaWdodDogMTAwJTttYXJnaW46IDA7cGFkZGluZzogMDt9PC9zdHlsZT4KICAgIDxzdHlsZT4jbWFwIHtwb3NpdGlvbjphYnNvbHV0ZTt0b3A6MDtib3R0b206MDtyaWdodDowO2xlZnQ6MDt9PC9zdHlsZT4KICAgIDxzY3JpcHQgc3JjPSJodHRwczovL2Nkbi5qc2RlbGl2ci5uZXQvbnBtL2xlYWZsZXRAMS42LjAvZGlzdC9sZWFmbGV0LmpzIj48L3NjcmlwdD4KICAgIDxzY3JpcHQgc3JjPSJodHRwczovL2NvZGUuanF1ZXJ5LmNvbS9qcXVlcnktMS4xMi40Lm1pbi5qcyI+PC9zY3JpcHQ+CiAgICA8c2NyaXB0IHNyYz0iaHR0cHM6Ly9tYXhjZG4uYm9vdHN0cmFwY2RuLmNvbS9ib290c3RyYXAvMy4yLjAvanMvYm9vdHN0cmFwLm1pbi5qcyI+PC9zY3JpcHQ+CiAgICA8c2NyaXB0IHNyYz0iaHR0cHM6Ly9jZG5qcy5jbG91ZGZsYXJlLmNvbS9hamF4L2xpYnMvTGVhZmxldC5hd2Vzb21lLW1hcmtlcnMvMi4wLjIvbGVhZmxldC5hd2Vzb21lLW1hcmtlcnMuanMiPjwvc2NyaXB0PgogICAgPGxpbmsgcmVsPSJzdHlsZXNoZWV0IiBocmVmPSJodHRwczovL2Nkbi5qc2RlbGl2ci5uZXQvbnBtL2xlYWZsZXRAMS42LjAvZGlzdC9sZWFmbGV0LmNzcyIvPgogICAgPGxpbmsgcmVsPSJzdHlsZXNoZWV0IiBocmVmPSJodHRwczovL21heGNkbi5ib290c3RyYXBjZG4uY29tL2Jvb3RzdHJhcC8zLjIuMC9jc3MvYm9vdHN0cmFwLm1pbi5jc3MiLz4KICAgIDxsaW5rIHJlbD0ic3R5bGVzaGVldCIgaHJlZj0iaHR0cHM6Ly9tYXhjZG4uYm9vdHN0cmFwY2RuLmNvbS9ib290c3RyYXAvMy4yLjAvY3NzL2Jvb3RzdHJhcC10aGVtZS5taW4uY3NzIi8+CiAgICA8bGluayByZWw9InN0eWxlc2hlZXQiIGhyZWY9Imh0dHBzOi8vbWF4Y2RuLmJvb3RzdHJhcGNkbi5jb20vZm9udC1hd2Vzb21lLzQuNi4zL2Nzcy9mb250LWF3ZXNvbWUubWluLmNzcyIvPgogICAgPGxpbmsgcmVsPSJzdHlsZXNoZWV0IiBocmVmPSJodHRwczovL2NkbmpzLmNsb3VkZmxhcmUuY29tL2FqYXgvbGlicy9MZWFmbGV0LmF3ZXNvbWUtbWFya2Vycy8yLjAuMi9sZWFmbGV0LmF3ZXNvbWUtbWFya2Vycy5jc3MiLz4KICAgIDxsaW5rIHJlbD0ic3R5bGVzaGVldCIgaHJlZj0iaHR0cHM6Ly9jZG4uanNkZWxpdnIubmV0L2doL3B5dGhvbi12aXN1YWxpemF0aW9uL2ZvbGl1bS9mb2xpdW0vdGVtcGxhdGVzL2xlYWZsZXQuYXdlc29tZS5yb3RhdGUubWluLmNzcyIvPgogICAgCiAgICAgICAgICAgIDxtZXRhIG5hbWU9InZpZXdwb3J0IiBjb250ZW50PSJ3aWR0aD1kZXZpY2Utd2lkdGgsCiAgICAgICAgICAgICAgICBpbml0aWFsLXNjYWxlPTEuMCwgbWF4aW11bS1zY2FsZT0xLjAsIHVzZXItc2NhbGFibGU9bm8iIC8+CiAgICAgICAgICAgIDxzdHlsZT4KICAgICAgICAgICAgICAgICNtYXBfZTk5ZWVhZTY3MjdhNGQxNWIwMTkyZmNiNDIxYTc5ZTMgewogICAgICAgICAgICAgICAgICAgIHBvc2l0aW9uOiByZWxhdGl2ZTsKICAgICAgICAgICAgICAgICAgICB3aWR0aDogMTAwLjAlOwogICAgICAgICAgICAgICAgICAgIGhlaWdodDogMTAwLjAlOwogICAgICAgICAgICAgICAgICAgIGxlZnQ6IDAuMCU7CiAgICAgICAgICAgICAgICAgICAgdG9wOiAwLjAlOwogICAgICAgICAgICAgICAgfQogICAgICAgICAgICA8L3N0eWxlPgogICAgICAgIAogICAgCiAgICAgICAgICAgICAgICA8c3R5bGU+CiAgICAgICAgICAgICAgICAgICAgLmxlYWZsZXQtaW1hZ2UtbGF5ZXIgewogICAgICAgICAgICAgICAgICAgICAgICAvKiBvbGQgYW5kcm9pZC9zYWZhcmkqLwogICAgICAgICAgICAgICAgICAgICAgICBpbWFnZS1yZW5kZXJpbmc6IC13ZWJraXQtb3B0aW1pemUtY29udHJhc3Q7CiAgICAgICAgICAgICAgICAgICAgICAgIGltYWdlLXJlbmRlcmluZzogY3Jpc3AtZWRnZXM7IC8qIHNhZmFyaSAqLwogICAgICAgICAgICAgICAgICAgICAgICBpbWFnZS1yZW5kZXJpbmc6IHBpeGVsYXRlZDsgLyogY2hyb21lICovCiAgICAgICAgICAgICAgICAgICAgICAgIGltYWdlLXJlbmRlcmluZzogLW1vei1jcmlzcC1lZGdlczsgLyogZmlyZWZveCAqLwogICAgICAgICAgICAgICAgICAgICAgICBpbWFnZS1yZW5kZXJpbmc6IC1vLWNyaXNwLWVkZ2VzOyAvKiBvcGVyYSAqLwogICAgICAgICAgICAgICAgICAgICAgICAtbXMtaW50ZXJwb2xhdGlvbi1tb2RlOiBuZWFyZXN0LW5laWdoYm9yOyAvKiBpZSAqLwogICAgICAgICAgICAgICAgICAgIH0KICAgICAgICAgICAgICAgIDwvc3R5bGU+CiAgICAgICAgICAgIAo8L2hlYWQ+Cjxib2R5PiAgICAKICAgIAogICAgICAgICAgICA8ZGl2IGNsYXNzPSJmb2xpdW0tbWFwIiBpZD0ibWFwX2U5OWVlYWU2NzI3YTRkMTViMDE5MmZjYjQyMWE3OWUzIiA+PC9kaXY+CiAgICAgICAgCjwvYm9keT4KPHNjcmlwdD4gICAgCiAgICAKICAgICAgICAgICAgdmFyIG1hcF9lOTllZWFlNjcyN2E0ZDE1YjAxOTJmY2I0MjFhNzllMyA9IEwubWFwKAogICAgICAgICAgICAgICAgIm1hcF9lOTllZWFlNjcyN2E0ZDE1YjAxOTJmY2I0MjFhNzllMyIsCiAgICAgICAgICAgICAgICB7CiAgICAgICAgICAgICAgICAgICAgY2VudGVyOiBbMC4wLCAtOC41OTIyOTc2MDc2ODAwMDJlLTE3XSwKICAgICAgICAgICAgICAgICAgICBjcnM6IEwuQ1JTLkVQU0czODU3LAogICAgICAgICAgICAgICAgICAgIHpvb206IDEsCiAgICAgICAgICAgICAgICAgICAgem9vbUNvbnRyb2w6IHRydWUsCiAgICAgICAgICAgICAgICAgICAgcHJlZmVyQ2FudmFzOiBmYWxzZSwKICAgICAgICAgICAgICAgIH0KICAgICAgICAgICAgKTsKCiAgICAgICAgICAgIAoKICAgICAgICAKICAgIAogICAgICAgICAgICB2YXIgdGlsZV9sYXllcl9jNzk3ZWYwMGMyNjc0YWE1ODU1OWE2Y2E5YTE4ZTU2NiA9IEwudGlsZUxheWVyKAogICAgICAgICAgICAgICAgImh0dHBzOi8ve3N9LnRpbGUub3BlbnN0cmVldG1hcC5vcmcve3p9L3t4fS97eX0ucG5nIiwKICAgICAgICAgICAgICAgIHsiYXR0cmlidXRpb24iOiAiRGF0YSBieSBcdTAwMjZjb3B5OyBcdTAwM2NhIGhyZWY9XCJodHRwOi8vb3BlbnN0cmVldG1hcC5vcmdcIlx1MDAzZU9wZW5TdHJlZXRNYXBcdTAwM2MvYVx1MDAzZSwgdW5kZXIgXHUwMDNjYSBocmVmPVwiaHR0cDovL3d3dy5vcGVuc3RyZWV0bWFwLm9yZy9jb3B5cmlnaHRcIlx1MDAzZU9EYkxcdTAwM2MvYVx1MDAzZS4iLCAiZGV0ZWN0UmV0aW5hIjogZmFsc2UsICJtYXhOYXRpdmVab29tIjogMTgsICJtYXhab29tIjogMTgsICJtaW5ab29tIjogMCwgIm5vV3JhcCI6IGZhbHNlLCAib3BhY2l0eSI6IDEsICJzdWJkb21haW5zIjogImFiYyIsICJ0bXMiOiBmYWxzZX0KICAgICAgICAgICAgKS5hZGRUbyhtYXBfZTk5ZWVhZTY3MjdhNGQxNWIwMTkyZmNiNDIxYTc5ZTMpOwogICAgICAgIAogICAgCiAgICAgICAgICAgIHZhciBpbWFnZV9vdmVybGF5XzE3ZjQ1ZWUyOWM5YTQxY2Q4N2UzODE5ZDNiMGU4ZDJiID0gTC5pbWFnZU92ZXJsYXkoCiAgICAgICAgICAgICAgICAiZGF0YTppbWFnZS9wbmc7YmFzZTY0LGlWQk9SdzBLR2dvQU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onload=\"this.contentDocument.open();this.contentDocument.write(atob(this.getAttribute('data-html')));this.contentDocument.close();\" allowfullscreen webkitallowfullscreen mozallowfullscreen></iframe></div></div>"
      ],
      "text/plain": [
       "<folium.folium.Map at 0x7f0a51b566d0>"
      ]
     },
     "execution_count": 5,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "import cartopy.crs as ccrs\n",
    "from cartopy.img_transform import warp_array\n",
    "\n",
    "source_extent = [lon.min(), lon.max(), lat.min(), lat.max()]\n",
    "\n",
    "new_data = warp_array(\n",
    "    colored_data,\n",
    "    target_proj=ccrs.GOOGLE_MERCATOR,\n",
    "    source_proj=ccrs.PlateCarree(),\n",
    "    target_res=data.shape,\n",
    "    source_extent=source_extent,\n",
    "    target_extent=None,\n",
    "    mask_extrapolated=False,\n",
    ")\n",
    "\n",
    "\n",
    "m = folium.Map(location=[lat.mean(), lon.mean()], zoom_start=1)\n",
    "\n",
    "folium.raster_layers.ImageOverlay(\n",
    "    image=new_data[0],\n",
    "    bounds=[[lat.min(), lon.min()], [lat.max(), lon.max()]],\n",
    "    opacity=0.25,\n",
    ").add_to(m)\n",
    "\n",
    "m"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "TODO: Try [rasterio](https://github.com/mapbox/rasterio/blob/ca75cf0a842943c1b3da4522e6ea3500215130fd/docs/reproject.rst).  Rasterio can warp images and arrays."
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# Compare to original"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "From https://scitools.org.uk/cartopy/docs/latest/gallery/waves.html\n",
    "\n",
    "![](https://scitools.org.uk/cartopy/docs/latest/_images/sphx_glr_waves_001.png)"
   ]
  }
 ],
 "metadata": {
  "kernelspec": {
   "display_name": "Python 3",
   "language": "python",
   "name": "python3"
  },
  "language_info": {
   "codemirror_mode": {
    "name": "ipython",
    "version": 3
   },
   "file_extension": ".py",
   "mimetype": "text/x-python",
   "name": "python",
   "nbconvert_exporter": "python",
   "pygments_lexer": "ipython3",
   "version": "3.9.0"
  }
 },
 "nbformat": 4,
 "nbformat_minor": 1
}
